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Minutes per pound for Prime rib.

Discussion in 'Beef' started by dave from mesa, Dec 12, 2013.

  1. dave from mesa

    dave from mesa Meat Mopper SMF Premier Member

    I know cook it till it's done. Works for me on pork but want MR prime rib. Posting a link to another thread is ok.

    Not sure if it will be rib on or off yet. Going to get it today.

    Going to smoke it at 225 then finish at 500 for a crust.

    Also any idea how many lbs to get for 10 ppl? I'm thinking 8-10 with some leftovers.

  2. scootermagoo

    scootermagoo Smoking Fanatic

    Follow this link, Chef Jimmy's Au Jus recipe is also listed in the thread: http://www.smokingmeatforums.com/t/121473/prime-rib-time.

    I am going to be doing a PR for Christmas eve for the missus and me.  I am going to take a stab at the Au Jus because it sounds absolutely delicious!  Thanks to Chef Jimmy!
  3. Bearcarver

    Bearcarver SMF Hall of Fame Pitmaster Group Lead OTBS Member

  4. ak1

    ak1 Master of the Pit OTBS Member

    A good rule of thumb is 1 rib per 2 people, so if you are feeding 10 get a roast with 5 ribs...+ 1 extra.for some leftovers.
  5. demosthenes9

    demosthenes9 Master of the Pit OTBS Member

    Short answer to all your questions is: "It depends"   :)

    Let's start with the last question, how much to get for 10 ppl.  If you are cooking "bone in", you'll need a bigger PR as you'll lose weight to the bones.   Additionally, it depends on whether or not the PR is trimmed, i.e. if the tail is taken off. 

    Here are two pics that demonstrate the difference.

    Tail on:

    Tail off (Rolled):

    It might not seem like much, but if you are cutting 1+ inch slabs of PR, it could amount to 2-3 ounces per slice.   For example, an 8lb lb untrimmed PR might drop to 6 pounds of desirable beef once the tail is trimmed off (if that is how you want it).

    As to actual cook times, the first thing to consider is the internal temp of the PR when it goes into the smoker.  IF you go straight from the fridge to the smoker, the cook time will be longer.   If you bring the PR close to room temperature before putting it in the smoker, the cook time will be much less.    This is one of the reasons that Bear's cook times are around 4 hrs, while my PR cooks in under 2 hours.

    Something very important to point out is that you DON'T gauge PR cook times by the weight of the PR.  What matters is how thick the roast is, not it's length.    Say I have a 7 bone 14 pound PR.    If I sectioned it off into a 3 bone 6lb roast and a 4 bone 8lb roast, each of those would take the same amount of time to cook.  Additionally, either or both of them would take the same time to cook as the whole 7 bone 14lb roast would.

    With all that said, here's some general rules of thumb.

    If your PR goes into the smoker cold, it will take about 4 hours. 

    If your PR is close to room temp (68 degrees or so), it will take about 2 hours.

    While it's cooking, monitor the internal temp (IT) with a good thermometer.  If the IT is going up too fast, lower the temp of your smoker.   If the PR is taking too long, turn the heat up to shorten the cook time.  As long as you stay between 180 and 260, your PR should come out with a nice, even edge to edge color.
  6. chef jimmyj

    chef jimmyj Epic Pitmaster Staff Member Moderator Group Lead OTBS Member SMF Premier Member

    I too follow the the 1 Bone per 2 people which works out to 1 pound per person. 10 people, get 5 Bones or a 10 to 11 Pound Roast. Next, in a  225°F Smoker you can figure 30 minutes per pound to an IT of 110°F plus 15-20 minutes in the Oven depending on your desired final IT. If you go Boneless, the time is closer to 15-20 minutes per pound and figure 3/4 pound per person. Here is one I did with some great recipes...JJ

    Last edited: Dec 13, 2013
  7. dave from mesa

    dave from mesa Meat Mopper SMF Premier Member

    Thanks for the info guys. Bought a 10.38#  4 bone standing rib roast  at Costco. Going to dry age it till the 24th. Hopefully it will come out good. Will post pics when it's done.

    thanks again

    Last edited: Dec 13, 2013
  8. jeff j

    jeff j Newbie

    I'm smoking a 12# tri-tip on my treager at 180* how long do you think it will take
  9. cliffcarter

    cliffcarter Master of the Pit Group Lead OTBS Member

    A very long time... where on earth did you find a 12 pound tri-tip? Do you mean brisket or shoulder clod, perhaps?

    180° degrees on the Treager is usually done for an hour to get some smoke flavor to the meat, then the cook temp gets bumped up to a more reasonable BBQ temp, such as 250°.

    You should start a new thread for this question, you will get a better response.
  10. eman

    eman Smoking Guru Staff Member Moderator OTBS Member

    Never seen a tri tip over 4 lbs . Make sure of your cut before cooking as it will make a BIG difference.